﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 多态
{
    class Sub:Calculate
    {
        public Sub(int a,int b):base(a,b)
        {

        }


        public override void DisplayResult()
        {
            Console.WriteLine("{0}-{1}={2}",a,b,a-b);
        }
    }
}
